"No one is getting any younger" -- that is truth!! I started this journey at age 61 and will be turning 70 in July -- yikes -- time to get this road on the show!!
One of Dr Liau's recent presentation had KM Plots for several trials. I believe that you could overlay them all and cover nearly all the data with a wide marker. I think that if you superimposed our KM the benefit would be quite clear as there data levels out at 5% survival while ours is somewhere around 30%. That should be sufficient for the Regulators.